Siegling Extremultus

Siegling Extremultus

Highly efficient flat belts

Extremultus power-transmission belts were developed by closely liaising with users and OEMs and can all handle up to approx. 2000 kW. At the same time, they're very durable, elastic and shock- and vibration-absorbent. Belt velocities of up to 100 m/s are no problem.

In addition to other advantages, flat belts are much more efficient than V-belts. In V-belts, energy losses occur, not just due to flexing in the material, but also due to friction at the sides and other aspects associated with the belt design.

Which is why Siegling Extremultus high-efficiency flat belts are particularly common in (small) hydroelectric power plants where they enable low-loss energy transmission from the water to the consumer.

Advantages of flat belts compared with V-belts

Friction on the sides at the top and bottom, internal friction losses due to hysteresis.

Source: Tests carried out by the University of Gothenburg

Higher friction losses when the V-belt pulleys are misaligned.

Source: Tests carried out by the University of Gothenburg

Difference in length and rotational vibrations when V-belts are not loaded evenly.

Source: Tests carried out by the University of Gothenburg

Efficiency of a flat belt (top), efficiency of a V-belt (bottom). Siegling Extremultus flat belts have an efficiency of 98.6%.